Solid-State 13C NMR of Cell Walls in Wheat Bran

Cell walls from wheat bran were examined intact by cross-polarization, magic-angle spinning 13C NMR to determine their polymer composition. The carbohydrate part of the 13C spectrum was typical of graminaceous cell walls having cellulose and arabinoxylans as their main components. Only a little lign...

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Bibliographic Details
Published in:Journal of agricultural and food chemistry 1997-01, Vol.45 (1), p.117-119
Main Authors: Ha, Marie-Ann, Jardine, W. Gordon, Jarvis, Michael C
Format: Article
Language:English
Subjects:
BEURRE VEGETAL
Biological and medical sciences
BLE
BRAN
CELL WALLS
Cereal and baking product industries
CUTIN
ESPECTROSCOPIA RMN
Food industries
Fundamental and applied biological sciences. Psychology
GRASAS VEGETALES
LIGNINAS
LIGNINE
LIGNINS
NMR SPECTROSCOPY
PARED CELULAR
PAROI CELLULAIRE
PLANT FATS
SALVADO
SON
SPECTROSCOPIE RMN
TRIGO
WHEATS
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Summary:Cell walls from wheat bran were examined intact by cross-polarization, magic-angle spinning 13C NMR to determine their polymer composition. The carbohydrate part of the 13C spectrum was typical of graminaceous cell walls having cellulose and arabinoxylans as their main components. Only a little lignin was observed in the spectrum, but signals from the hydrocarbon chains of cutin were particularly obvious. It is suggested that cutin, rather than lignin, plays an important role in protecting wheat bran from microbial degradation in the rumen and in the human gut and that the hydrophobic properties of the cutin are likely to be responsible for some of its nutritional properties. Keywords: Bran; cell walls; lignin; cutin; solid-state NMR
ISSN:0021-8561
1520-5118
DOI:10.1021/jf960311m